Seems like On Lisp is becoming something of a collector's item. Even though the book is available for free as a PDF from its author, used copies start from ~$300 on Amazon, with the better-shape ones reaching $600.

Walking eastwards along Charleston in the Googleplex, a bit after the Huff intersection there's a whole bunch of shrubs planted in a neat checkered pattern on the right hand-side of the pedestrian path. If you look closely at the "shrubs"...

Machine learning has had a huge impact on computer science, making it possible explore new frontiers of research and to develop amazingly useful products that millions of people use every day. Our machine learning system, TensorFlow, is used for everything from speech recognition in the Google app, to Smart Reply in Inbox, to search in Google Photos.

And now you can use it too.

Today, we’re proud to announce the open source release of TensorFlow - our second-generation machine learning system that is a general, flexible, portable, easy-to-use, and completely open source software library for numerical computation using data flow graphs. Head over to the Google Research blog to learn more.